如何在原始文件夾中設置Android的FileInputStream中的路徑

Question

我必須從FileInputStream中的原始文件夾指定mp3歌曲的路徑。實際上我有這個代碼（計算BPM）在Java和轉換成android。

package beatit; 

import java.io.FileInputStream; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javazoom.jl.player.Player; 

/** 
* @author Peter Backx 
*/ 
public class Main { 

static Logger log = Logger.getLogger("BeatIt"); 
/** 
* @param args the command line arguments 
*/ 
public static void main(String[] args) throws Exception { 
    BPM2SampleProcessor processor = new BPM2SampleProcessor(); 
    processor.setSampleSize(1024); 
    EnergyOutputAudioDevice output = new EnergyOutputAudioDevice(processor); 
    output.setAverageLength(1024); 

    Player player = new Player(new FileInputStream(args[0]), output); // here i give mp3 from raw instead of arg[0]. 

    player.play(); 
    log.log(Level.INFO, "calculated BPM: " + processor.getBPM()); 
} 

}

我試過如下：

Player player = new Player(new FileInputStream(R.raw.mh), output); 

和，而不是球員，我用這個

MediaPlayer mPlayer = MediaPlayer.create(this, R.raw.mh); 

，但我遇到錯誤我的日誌貓文件

05-02 17:04:35.180: ERROR/AndroidRuntime(278): Caused by: java.lang.IndexOutOfBoundsException 
05-02 17:04:35.180: ERROR/AndroidRuntime(278):  at java.util.LinkedList.get(LinkedList.java:459) 
05-02 17:04:35.180: ERROR/AndroidRuntime(278):  at beatit.beatit.BPM2SampleProcessor.getBPM(BPM2SampleProcessor.java:69) 
05-02 17:04:35.180: ERROR/AndroidRuntime(278):  at beatit.beatit.Main.onCreate(Main.java:44) 
05-02 17:04:35.180: ERROR/AndroidRuntime(278):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
05-02 17:04:35.180: ERROR/AndroidRuntime(278):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
05-02 17:04:35.180: ERROR/AndroidRuntime(278):  ... 11 more 

Answer 1

使用

getResources().openRawResource(R.raw.mh); 

它returns文件的一個InputStream。